.purchase {
    border-color: darkgrey;
    background: black;
    color : white;
    padding: 8px 8px 8px 8px;
    margin: 16px 16px;    
}
.rights,.register {
    font-style: italic;
    color : gray;
    width: 50%;
    margin-left: 32px;
}

.licenseID {
    font-size: 75%;
    width: 50%;
    margin-left: 32px;
}

.inputhours {
    width: 50px;
}